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Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

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CHAPTER 19For Monte Carlo studies, the program automatically assigns the label g1to the first group, g2 to the second group, etc. These labels are used withthe MODEL POPULATION and MODEL commands to describe thedata generation and analysis models for each group.NREPSThe NREPS option is used to specify the number of replications for aMonte Carlo study, that is, the number of samples that are drawn fromthe specified population and the number of analyses that are carried out.The NREPS option is specified as follows:NREPS = 100;where 100 is the number of samples that are drawn and the number ofanalyses that are carried out. The default for the NREPS option is 1.SEEDThe SEED option is used to specify the seed to be used for the randomdraws. The SEED option is specified as follows:SEED = 23458256;where 23458256 is the random seed to be used for the random draws.The default for the SEED option is zero.DATA GENERATIONThe GENERATE, CUTPOINTS, GENCLASSES, NCSIZES, CSIZES,and HAZARDC options are used in conjunction with the MODELPOPULATION command to specify how data are to be generated for aMonte Carlo simulation study. These options are described below.GENERATEThe GENERATE option is used to specify the scales of the dependentvariables for data generation. Variables not mentioned using theGENERATE option are generated as continuous variables. In additionto generating continuous variables which is the default, dependentvariables can be generated as censored, binary, ordered categorical692

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